Military and Firearms History Trivia Challenge

Hey guys, I want to test myself on military and firearms history(20th and 21st century only). I like to think I know a good deal about it so send me some questions and I'll see if I can answer them(I'm 14). Also I can ask other ppl questions if they wan't.
Rules:No Google or anything like that. If you don't know an answer then say so. You may also use pictures in questions or to give hints.And...............BEGIN!!!!!

Uhhhgggg hmmm not sure, but I'm gonna say the Trapdoor Springfield. Alright now I've got a question. This should be relatively easy for AK enthusiasts. What was Mikhail Kalashnikov's original occupation in WW2?

Uhhhgggg hmmm not sure, but I'm gonna say the Trapdoor Springfield. Alright now I've got a question. This should be relatively easy for AK enthusiasts. What was Mikhail Kalashnikov's original occupation in WW2?

The .30-40 Krag was all of the above! First primary bolt-action, .30, smokeless-powder rifle and the first antique gun I bought.

Note that the Krag was used in the Spanish-American War by US Army regiments, but US Volunteer regiments were largely fielding .45-70 Trapdoors. As arguably outdated as the .30-40 single-shot repeater already was (it was only our primary rifle for about eight years), the single shot Trapdoor was truly obsolete. Next question.

Whom did the US government have to pay for taking the design for the 1903 Springfield from?